---
title: "Petlibro Water Fountain Filter — £260K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/pet-supplies/petlibro-water-fountain-filter"
last_updated: "2026-07-31T10:32:23.692Z"
locale: en
meta:
description: "Niche score 52/100 · £260K/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · £260K/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Petlibro Water Fountain Filter — £260K/yr Amazon UK Niche (2026) - Flapen"
---
# **petlibro water fountain filter**
**Worth a look**
Shows a sweet-spot price point ($70.56 avg), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 48Growth 46Conversion 71Competition 49Returns 76Price range 21Avg price 86Brand share 0Review moat 51Quality gap 81
**Avg price**
**Great****£70.56**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Returns**
**Great****2.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Good****6.5%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****1,443.33**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****56%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****£260K**
£260K/yr · 57K searches
**Growth**
**Okay****+17.0%**
90-day search growth — must beat 0% to launch
**Price range**
**Bad****£8.21–£422.24**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** High Price**](https://flapen.com/research/niches?market=uk&signal=high_price "Avg price > $50")
According to Flapen's Amazon United Kingdom niche tracking, petlibro water fountain filter is a £260K/yr Amazon United Kingdom market (57K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Mar–Jun–Jul–Aug. Verdict: Worth a look — 52/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **petlibro water fountain filter market data**
- **Units sold / yr**
- **5K–6K**
- avg 100–250/product
- **Revenue / yr**
- **£353K–£423K**
- units × avg price
- **Conversion rate**
- **6.5%**
- **Avg BSR**
- **#76**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **6.6%**
- **Avg brand age**
- **20 months**
- **Avg seller age**
- **216 days**
## **Competition & brand share**
The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**5 **▲rising
**Sellers**
**11**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**56%**
Top 20: 99%
**Open market**
**0%**
- PETLIBRO78% - Caehomly10% - PETPNR5% - Fentar4% - anyuan boy3% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 91 weeks — +17.0% search growth over the last 90 days.
2K2KHoliday '24Spike '25Prime Day '25Black Friday '25Spike '26Prime Day '26 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Mar, Jun, Jul, Aug · busiest ÷ quietest = 3.4×
[**Open Trend **](https://flapen.com/research/uk/pet-supplies/petlibro-water-fountain-filter/trend)
## **Top petlibro water fountain filter search terms**
- **petlibro**29K/yr+30.0%2.0% conv. - **petlibro water fountain filter**18K/yr-3.8%15.8% conv. - **petlibro filter**4K/yr+37.2%17.3% conv. - **pet libro water fountain filter**3K/yr+8.1%17.8% conv. - **pet libro**3K/yr+22.2%1.8% conv. [**All search terms **](https://flapen.com/research/uk/pet-supplies/petlibro-water-fountain-filter/search-terms)
## **Top petlibro water fountain filter products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%£13K10%£26K15%£39K20%£52K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 21 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**PETLIBRO Cat Water Fountain Filters for Dockstream 8-Pack**PETLIBRO**£22.81**4.4★129 rev](https://www.amazon.co.uk/dp/B0CZ8VZSCP) [2**PETLIBRO Cat Water Fountain Filters for Dockstream 4-Pack**PETLIBRO**£13.58**4.4★195 rev](https://www.amazon.co.uk/dp/B0C6T6JGQ4) [3**16 Packs Cat Water Fountain Filter for PETLIBRO Dockstream Tomxcute**Caehomly**£12.39**4.3★55 rev](https://www.amazon.co.uk/dp/B0F4XG7NN1) [4**PETLIBRO Automatic Cat Feeder Battery Powered App Control 2L**PETLIBRO**£49.11**4.3★7,844 rev](https://www.amazon.co.uk/dp/B0CHRFDZWZ) [5**PETLIBRO Dockstream Cat Water Fountain Stainless Steel Tray 2.5L**PETLIBRO**£41.27**4.4★129 rev](https://www.amazon.co.uk/dp/B0F62F4C6Q)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**PETLIBRO Luma Automatic Self-Cleaning Cat Litter Tray Odour Control**PETLIBRO**£422.24**47 rev4mo ago](https://www.amazon.co.uk/dp/B0FPX3GGN7) [**PETLIBRO Dockstream Wireless Cat Fountain Motion Sensor 2.5L White**PETLIBRO**£52.47**5,333 rev9mo ago](https://www.amazon.co.uk/dp/B0F7R18PPM) [**12 Packs Filter Replacement Compatible with Petlibro Cat Water Fountain PLWF005/ PLWF105/ PLWF115 8 Months Set of Replacement Filters for Ultra Quiet Pet Water Fountain Easy to Install**PETPNR**£8.43**55 rev11mo ago](https://www.amazon.co.uk/dp/B0FLX9TWTY) [**PETLIBRO Dockstream 2 Cat Water Fountain Tracks Drinking Volume 3L Black**PETLIBRO**£65.81**1,767 rev11mo ago](https://www.amazon.co.uk/dp/B0FDKN2675) [**PETLIBRO Dockstream 2 Cat Water Fountain Tracks Drinking Volume 3L White**PETLIBRO**£72.77**1,767 rev11mo ago](https://www.amazon.co.uk/dp/B0FDKHY3HJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**PETLIBRO Dockstream Wireless Cat Fountain Motion Sensor 2.5L Black**PETLIBRO**£50.89**3.9★**▲ 269%**](https://www.amazon.co.uk/dp/B0C7CYXTW2) [**PETLIBRO Luma Automatic Self-Cleaning Cat Litter Tray Odour Control**PETLIBRO**£422.24**4.4★**▲ 207%**](https://www.amazon.co.uk/dp/B0FPX3GGN7) [**PETLIBRO Dockstream 2 Cat Water Fountain Tracks Drinking Volume 3L White**PETLIBRO**£72.77**4.2★**▲ 138%**](https://www.amazon.co.uk/dp/B0FDKHY3HJ) [**10 Packs Pet Water Fountain Filter Compatible with 2.1L Cat PLWF002 - Replacement Set with Activated Carbon and Foam Sponge (10pcs Each)**anyuan boy**£11.81**4.4★**▲ 40%**](https://www.amazon.co.uk/dp/B0CJV6XKVC) [**PETLIBRO Cat Water Fountain Filters for Dockstream 8-Pack**PETLIBRO**£22.81**4.4★**▲ 33%**](https://www.amazon.co.uk/dp/B0CZ8VZSCP)
**~~View all trending →~~**
## **What buyers say about petlibro water fountain filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**14%
*“Well worth the money”*
**Quality-Overall**14%
*“the build quality feels solid”*
**Ease Of Use**11%
*“Easy to use”*
**Ease Of Cleaning**10%
*“easy to clean”*
**Filtration**8%
*“these filters are very efficient”*
**Pet Friendly**6%
*“My cat loves this water fountain”*
**Battery Life**5%
*“The battery lasts long”*
**Size-Overall**4%
*“Fit perfect”*
**Assembly/Installation**2%
*“Very easy to disassemble and clean”*
**Advertised Vs Actual Product**2%
*“Does the job”*
### **What buyers complain about **
**Connectivity-Overall**12%
*“Connection problems”*
**Durability**10%
*“Stopped Working”*
**Functionality-Overall**9%
*“Doesnt work properly”*
**Value For Money**7%
*“overpriced”*
**Filtration**6%
*“Really bad filters”*
**Size-Overall**5%
*“Not fit for purpose”*
**Battery Life**5%
*“Mine lasted less than two years before the battery failed completely”*
**Leak-Proof**4%
*“Leaks awfully”*
**Quality-Overall**4%
*“Garbage product”*
**Ease Of Use**3%
*“this is impossible”*
### **Top return reasons **
**Size-Overall**19%
**Connectivity-Overall**15%
**Functionality-Overall**15%
**Charging**6%
**Defective Material/Parts**6%
**Filtration**6%
**Compatibility-Overall**5%
**Value For Money**5%
**Battery Life**4%
**Advertised Vs Actual Product**2%
## **Common questions**
- **Is petlibro water fountain filter profitable to sell on Amazon United Kingdom?**
- The niche generates £260K/yr across 21 tracked products. 5 of 6 products launched in the last 360 days are still selling. 90-day search growth is +17.0%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the petlibro water fountain filter niche?**
- 5 brands and 11 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in petlibro water fountain filter?**
- Top complaints mined from reviews: Connectivity-Overall, Durability, Functionality-Overall. The return rate is 2.0%.
- **When does demand for petlibro water fountain filter peak?**
- Demand peaks in Mar–Jun–Jul–Aug; the busiest month runs 3.4× the quietest.
- **What does it cost to enter the petlibro water fountain filter niche?**
- Listings span £8.21–£422.24; the average listing price is £70.56 (sweet spot $15–$100). The average incumbent carries 1,443 reviews — the moat a new listing must climb.
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